AlSi10Mg alloys are being actively studied through additive manufacturing for application in the automobile and aerospace industries because of their excellent mechanical properties. To obtain a consistently high quality product through additive manufacturing, studying the flowability and spreadability of the metal powder is necessary. AlSi10Mg powder easily forms an oxide film on the powder surface and has hydrophilic properties, making it vulnerable to moisture. Therefore, in this study, AlSi10Mg powder was hydrophobically modified through silane surface treatment to improve the flowability and spreadability by reducing the effects of moisture. The improved flowability according to the number of silane surface treatments was confirmed using a Carney flowmeter. In addition, to confirm the effects of improved spreadability, the powder prior to surface treatment and that subjected to surface treatment four times were measured and compared using s self-designed recoating tester. The results of this study confirmed the improved flowability and spreadability based on the modified metal powder from hydrophilic to hydrophobic for obtaining a highquality additive manufacturing product.

Abstract
1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
References

• 박상철(한국생산기술연구원 한국희소금속산업기술센터, 인하대학교 신소재공학과) | Sang Cheol Park (Korea Institute for Rare Metals, Korea Institute of Industrial Technology,Department of Materials Science and Engineering, Inha University)
• 김인영(한국생산기술연구원 한국희소금속산업기술센터,고려대학교 신소재공학과) | In Yeong Kim (Korea Institute for Rare Metals, Korea Institute of Industrial Technology,Department of Materials Science and Engineering, Korea University)
• 김영일(한국생산기술연구원 한국희소금속산업기술센터) | Young Il Kim (Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea)
• 김대겸(한국생산기술연구원 한국희소금속산업기술센터) | Dae-Kyeom Kim (Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea)
• 이기안(인하대학교 신소재공학과) | Kee-Ahn Lee (Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea)
• 오승주(고려대학교 신소재공학과) | Soong Ju Oh (Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea)
• 이빈(한국생산기술연구원 한국희소금속산업기술센터,과학기술연합대학원대학교 융합제조시스템공학과) | Bin Lee (Korea Institute for Rare Metals, Korea Institute of Industrial Technology,Convergence Manufacturing System Engineering, University of Science & Technology) Corresponding author